Hydraulic motor.



Patented sep1.5,1911.

J R. PLANK.

HYDRAULIC. MTOB..

APPLIOATION FILED APR. 1911. 1,002,541.

A PLANOCRAPH C0., WAIHINCTON. D. C-

J RAYMOND PLANK, 0F GRAND RAPIDS, MICHIGAN.

HYDRAULIC MOTOR.

Specification of Letters Patent.

Application led April 6, 1911.

Patented Sept. 5, 1911. Serial No. 619,282.

To all whom 'it may concern:

Be it known that I, J RAYMOND PLANK, a citizen of the United States ofAmerica, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improvements in HydraulicMotors; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make` and use the same.

My invention relates to improvements in hydraulic motors, andparticularly to such motors for operating washing machines, and itsobject is to provide the same with improved valve operating mechanism,together with various new and useful features hereinafter more fullydescribed and particularly pointed out in the claims, reference beinghad to the accompanying drawings in which Figure l is a vertical sectionof a device embodying my invention; Fig. 2 a sectional plan view; Fig. 3a detail in vertical section on the line 3 3 of Fig. 2.

Like numbers refer to like parts in all of the gures.

1 represents a cylindrical case in the axis of which is a rotative hub 2in which is a vertically slidable angular shaft 3 adapted to carry theagitator of a washing machine (not shown).

l is a radial piston fixed in the hub and traversing the space withinthe case and adapted to oscillate therein. An abutment extends radiallyacross the space within the case and is provided with chambers 5 and 6.An inlet passage 7 opens into the chamber 5 and an exhaust passage 8opens into the chamber 6 to convey water to operate the motor. In thechamber 5 is an inlet valve 9 adapted to alternately open and closeopenings in opposite sides of the said chamber to discharge wateralternately in opposite directions into the interior of the case. In thechamber 6 is an exhaust valve 10 adapted to alternately discharge waterfrom the interior of the case into the lower chamber, and thence outthrough the passage 8. To simultaneously ,shift these valves I providean improved mechanism, consisting of a spool shaped abutment 11extending through the piston and having a limited longitudinal movementtherein. This abutment operates plates 12 adapted to simultaneouslyengage and shift both valves,

these plates being hinged to the piston close to the hub 2 and adaptedto swing toward and from the abutment 11. This abutment is connected atopposite ends to these plates by means of a loop 18 on each plate havinga slot therein to receive a lug 111 on the respective end of theabutment which lug is prevented from withdrawal from the loop by a pin15 extending vertically through the end of the lug, and to insure thepin remaining in place therein, it is prolonged downward to slidablyengage the bottom of the case.

In operation, when the piston swings around toward the valves the latterwill be positioned with the exhaust valve open toward the approachingside of the piston and the inlet valve opened toward the receding sideof the piston. As approaching plate 12 engages the valves the pressurebehind the abutment will hold the same projected toward the valves with-suflicient force to shift the valves whereupon as the valves move toshift, the plate is immediately met by the in-rush of water through theinlet valve, which balances the abutment in the piston and at thesametime cushions the piston against water and thus prevents anyhammering of the mechanism. These plates also being pivoted close to thehub engage the valves squarely and thus take off any side thrust on thesame due to the angular relation of the abutment to the same. By thisconstruction a single abutment or projection is adapted to operate bothvalves simultaneously.

What I claim is z* 1. A water motor, comprising a reciprocating piston,valves adapted to control and shift the flow of water in the motor, aplunger longitudinally movable in the pis* ton and adapted to shift thevalves and also adapted to permit further movement of the piston afterthe plunger operates on the valves and a hinged plate swinging betweenthe plunger and the valves.

2. A water motor, comprising a reciprocating piston, a plungerlongitudinally movable in the piston, inlet and exit chambers, valves insaid chambers adapted to shift the flow of water in the motor, saidvalves being shifted by the plunger before the piston stops, whereby thepiston is cushioned on the incoming water and a plate hinged at one sideand swinging between the plunger and the valves.

3. A water motor, comprising a cylindrical case, a hub rotative in theaxis of the case, a radial abutment having inlet and exhaust chambers,valves in the abutment adapted to reverse the flow of water in themotor, a radial piston in the case, a plunger longitudinally movable inthe piston and adapted to shift the valves before the piston stopsmoving toward the same and a plate at each side of the piston hinged tothe piston and swinging between the plunger and the valves.

4.' A water motor, comprising a cylindrical case, a hub inthe axis ofthe case, a

' Copies of this patent may be obtained for radial pistonon the hub,plates pivoted near the hub, a plunger movable in the piston andconnected to the plates, an abutment at v one side of the hub, andvalves in the abutment engaged and shifted by the plates.

5. A water motor, comprising a cylindrical case, a hub in the aXis ofthe case, a radial piston onthe hub, plates pivoted to the piston nearthe hub7 a plunger movable in the piston and attached to the plates atits ends, an abutment at one side of the hub, and valves in the abutmentengaged and shifted by the plates.

6. A water motor, comprising a cylindrical case, a hub rotative in theaxis of the ease, a radial piston on the hub, plates at opposite sidesof the piston and pivoted thereto near the hub, a plunger longitudinallymovable in the piston and having projections at its ends, loops on theplates having slots to receive the projections, pins in the projectionsto retain the same in the loops, a radial abutment in the case, andvalves in the abutment engaged and shifted by the plates.

In testimony whereof I aiiix my signature in presence of two witnesses.

J RAYMOND PLANK.

Witnesses:

HAROLD O. VAN AN'rwEnr, LUTHER V. MoUL'roN.

five cents each, by addressing the Commissioner of Patents, Washington,D. C.

